/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package com.cares.core.mng.service;

import java.io.Serializable;
import java.util.List;

import javax.annotation.PostConstruct;

import org.apache.commons.lang3.StringUtils;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
import org.apache.shiro.authc.credential.HashedCredentialsMatcher;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.apache.shiro.util.ByteSource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springside.modules.utils.Encodes;

import com.cares.core.utils.Constant;
import com.cares.entity.mng.LoginToken;
import com.cares.entity.mng.Orgnization;
import com.cares.entity.mng.User;

import com.google.common.base.Objects;

public class ShiroDbRealm extends AuthorizingRealm {

	@Autowired
	@Qualifier("accountService")
	protected AccountService accountService;

	/**
	 * 认证回调函数,登录时调用.
	 */
	@Override
	protected AuthenticationInfo doGetAuthenticationInfo(
			AuthenticationToken authcToken) throws AuthenticationException {

		LoginToken token = (LoginToken) authcToken;
		
		String[] parms = null;
		
		String parm = token.getSource();
		
		if(StringUtils.isNotEmpty(parm)) {
			parms = parm.split("\\|");
		}
		
		User user = accountService.findUserByLoginName(token
				.getUsername(), true);
		if (user != null) {
			if(parms!=null && "infobird".equals(parms[0])) {
				user.setName(parms[1]);
			}
			byte[] salt = Encodes.decodeHex(user.getSalt());
			return new SimpleAuthenticationInfo(new ShiroUser(user,token.getLocale()), user
					.getPassword(), ByteSource.Util.bytes(salt), getName());
		} else {
			System.out.println("登陆失败！用户不存在");
			return null;
		}
		
	}

	/**
	 * 授权查询回调函数, 进行鉴权但缓存中无用户的授权信息时调用.
	 */
	@Override
	protected AuthorizationInfo doGetAuthorizationInfo(
			PrincipalCollection principals) {
		ShiroUser shiroUser = (ShiroUser) principals.getPrimaryPrincipal();
		SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
		List<String> opts = shiroUser.getMenuOpts();
		if (null != opts) {
			for (String opt : opts) {
				info.addStringPermission(opt);
			}
		}
		if (shiroUser.isSuperMan()) {
			info.addStringPermission(Constant.SUPER_KEY);
		}
		// info.addStringPermission("MenuAdd");
		// info.addRoles(user.getRoleList());
		return info;
	}

	/**
	 * 设定Password校验的Hash算法与迭代次数.
	 */
	@PostConstruct
	public void initCredentialsMatcher() {
		HashedCredentialsMatcher matcher = new HashedCredentialsMatcher(
				AccountService.HASH_ALGORITHM);
		matcher.setHashIterations(AccountService.HASH_INTERATIONS);

		setCredentialsMatcher(matcher);
	}

	/**
	 * 自定义Authentication对象，使得Subject除了携带用户的登录名外还可以携带更多信息.
	 */
	public static class ShiroUser implements Serializable {
		private static final long serialVersionUID = -1373760761780840081L;
		private Long id;
		private String loginName;
		public String name;
		private String orgCode = "NONE";
		private String orgName = null;
		public String getOrgName() {
			return orgName;
		}

		public void setOrgName(String orgName) {
			this.orgName = orgName;
		}

		private Long orgId = new Long(-1);
		private String orgPath = "-1>>";
		private String orgType = "NONE";
		private String airCode= "NONE";
		private String userType;
		private String officeCode;
		private String locale="en";//语言设置，所在地区
		private boolean isSuperMan = false;
		private List<String> menuOpts;

		public ShiroUser(User user,String locale) {
			Orgnization org = user.getOrgnization();
			if(null==org)
				System.out.println("######登陆失败！机构不存在");
			this.id = user.getId();
			this.locale=locale;
			this.loginName = user.getLoginName();
			this.name = user.getName();
			if(null!=org.getAirCode())
				this.airCode = org.getAirCode();
			this.orgCode = user.getOrgCode();
			this.orgName=user.getOrgNameCn();
			userType = org.getOrgType();
			orgType = org.getOrgType();
			orgId = org.getId();
			orgPath = org.getOrgPath();
			if ("agentAdmin".equals(loginName)) {// 固化
				isSuperMan = true;
			}
		}

		public String getName() {
			return name;
		}

		public List<String> getMenuOpts() {
			return menuOpts;
		}

		public void setMenuOpts(List<String> menuOpts) {
			this.menuOpts = menuOpts;
		}

		/**
		 * 本函数输出将作为默认的<shiro:principal/>输出.
		 */
		@Override
		public String toString() {
			return loginName;
		}

		/**
		 * 重载hashCode,只计算loginName;
		 */
		@Override
		public int hashCode() {
			return Objects.hashCode(loginName);
		}

		/**
		 * 重载equals,只计算loginName;
		 */
		@Override
		public boolean equals(Object obj) {
			if (this == obj)
				return true;
			if (obj == null)
				return false;
			if (getClass() != obj.getClass())
				return false;
			ShiroUser other = (ShiroUser) obj;
			if (loginName == null) {
				if (other.loginName != null)
					return false;
			} else if (!loginName.equals(other.loginName))
				return false;
			return true;
		}

		public String getLoginName() {
			return loginName;
		}

		public String getOrgCode() {
			return orgCode;
		}

		public String getAirCode() {
			return airCode;
		}
		public String getUserType() {
			return userType;
		}

		public boolean isSuperMan() {
			return isSuperMan;
		}

		public Long getId() {
			return id;
		}

		public Long getOrgId() {
			if (null == orgId) {
				System.out.println(" >> 当前机构无效！");
				return new Long(-1);
			}
			return orgId;
		}

		public String getOrgPath() {
			return orgPath;
		}

		public String getOrgType() {
			return orgType;
		}

		public String getOfficeCode() {
			return officeCode;
		}

		public void setOfficeCode(String officeCode) {
			this.officeCode = officeCode;
		}

		public String getLocale() {
			return locale;
		}

		public void setLocale(String locale) {
			this.locale = locale;
		}
	}

	public void setAccountService(AccountService accountService) {
		this.accountService = accountService;
	}
	
	

}
